Its simplest definition is: “a particular tendency, trend, inclination, feeling, or opinion, especially one that is preconceived or unreasoned...
Ex. illegal bias against older job applicants; the magazine’s bias toward art rather than photography; our strong bias in favor of the idea” (“Bias”, Dictionary.com).
Other types of bias:
When you read through a source, ask yourself a few questions and think about the motives behind the source:
Want to take a deep dive into fact-checking and source evaluation? Try Michael Caulfield's online book, "Web Literacy for Student Fact-Checkers." It's a comprehensive approach to analyzing information, using a similar method to the CRAAP test. Caulfield uses the SIFT method: Stop, Investigate the source, find better coverage, trace the original context.
The Center for News Literacy at Stony Book College has yet another method: IMVAIN. It's part of their in-depth course on Source Evaluation.
I: Independent sources are better than self-interested sources
M: Multiple sources are better than single sources
V: Sources who Verify with evidence are better than sources who assert
A / I: Authoritative / Informed sources are better than uninformed sources
N: Named sources are better than unnamed sources
Can you use our bias guidelines to decide if these sources on climate change have a bias?